DBSB 9

(DBSB2003 9; MWSC 1255)

0.01 UTI

0.59

C_N

0.21

C_dens

0.5

C_C3

0.16

C_lit

0.03

C_dup

N_m (P>50%) 68

Core radius and density 2.7 [pc], 1.1 [pc^-2]

C3 classification BB

C_N 0.59 Moderately populated
C_dens 0.21 Very loose
C_C3 0.5 Intermediate quality
C_lit 0.16 Rarely studied
C_dup 0.03 Very likely duplicate

📥 Members 📊 Colab 🔬 Bayestar19

MOCA 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

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DBSB 9 is a moderately populated, very loose object of intermediate C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, very young cluster, but with a large variance across recent sources for the age parameter (see Parameters). It is rarely studied in the literature.

⚠️ Warning: This is very likely a duplicate object, which shares a large percentage of members with at least one previously reported entry. See table with shared members information.

Distant Moderate extinction Near-solar metallicity Very young

Palma et al. (2025)
Classified as genetic pair P210, along with HSC_1853.

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD classes: 0.16 (50th percentile), true positive? (human-assigned).

Hunt & Reffert (2023)
Classified as open cluster. CMD classes: 0.16 (50th percentile), true positive? (human-assigned).

Dutra et al. (2003)
Classified as infrared cluster (IRC).

Data

🔍 Search references for DBSB 9 in: SciX Simbad

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Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	99999–	112.972	-19.403	0.253	-2.253	2.295	66.967
Hunt & Reffert	2024	112.957	-19.381	0.255	-2.242	2.283	–
Cavallo et al.	2024	113.017	-19.408	0.253	–	–	–
Hunt & Reffert	2023	112.957	-19.381	0.255	-2.242	2.283	–
Just et al.	2023	112.937	-19.373	–	–	–	–
Kharchenko et al.	2016	112.937	-19.373	–	–	–	–
Kharchenko et al.	2013	112.942	-19.375	–	-9.33	7.91	–
Dutra et al.	2003	112.946	-19.37	–	–	–	–

💡 Note: The UCC values are estimated from its identified members.

Reference	Year	Dist [kpc]	Av [mag]	DAv [mag]	Age [Myr]	[Fe/H] [dex]	Mass [Msun]	B_frac	BSS
UCC	99999–	3.65	2.05	2.36	8	0.040	306	–	–
Hunt & Reffert	2024	3.65	2.04	2.36	16	–	391⁽¹⁾	–	–
Cavallo et al.	2024	3.36	2.05	–	19	0.040	–	–	–
Hunt & Reffert	2023	3.65	2.04	2.36	16	–	–	–	–
Just et al.	2023	–	–	–	1	–	222	–	–
Kharchenko et al.	2016	4.39	2.82	–	1	–	–	–	–
Kharchenko et al.	2013	4.39	2.82	–	1	–	–	–	–

(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
Bochum 6	97.1	112.98	-19.41	0.26	-2.25	2.3	66.97	0.5

💡 Note: The % column shows the percentage of members that DBSB 9 shares with each listed object.

Visualization

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